save method
make changes to your model and call save user.firstName = 'new firstname'; user.save()
Implementation
Future<void> save({String? docId, SetOptions? setOptions}) async {
if ((docId ?? this.docId) != null) {
this.isUpdating = true;
}
return await _collectionReference
.doc(docId ?? this.docId)
.set(_dataMap(), setOptions)
.then((value) => this.isUpdating = false);
}